Nut-lock.



A. DILLON.

NUT LOCK. APPUCATWN nu-zo luv/2's. 1913.

1,134,596. v Patented Apr.6, 1915.

1 I I aRkJ/IZZM 119mm THE NORRIS PETERS CU. PHOTO-LITHQ. WASHINGTON. D.C.

- useful Improvements ALBERT DILLON, OE AITCH, OHIO.

NUT-LOCK.

To all whom it may concern:

Be it known that I, ALBERT DILLON, citizen of the United States,residing at Aitch, in the county of Monroe and State of Ohio, haveinvented certain new and in Nut-Locks, which the following is aspecification.

This invention relates to new and useful improvements in nut locks andit has particular reference to a nut lock of that type which includes aremovable key carried by the bolt and formed for engagement with groovescut into the bolt and nut.

It is a further object of the invention to facilitate the locking andunlocking of the nut without damage to either of these members, andthereby to provide for the repeated use of both the bolt and nut.

The above and additional objects are accomplished by such means as areillustrated in their preferred embodiment in the ac companying drawings,described in the following specification and then more particularlypointed out in the claim which is appended hereto and forms a part ofthis application.

In describing my invention in detail reference will be had to theaccompanying drawings wherein like characters denote like orcorresponding parts throughout the several views, and in which Figure 1is a side elevation of a nut lock constructed in accordance with myinvention; Fig. 2 is a section on the line 33 of Fig. 1; Fig. 3 is asection on the line 22 of Fig. 1; Fig. 4 is a detail elevationof thelocking key or member, partly broken away; and Fig. 5 is a longitudinalsectional view of a portion of the bolt and key illustrating the mannerin which the latter is retained in proper place.

Referring now to the drawings, wherein is illustrated the embodiment ofmy invention the numeral 1 designates a bolt of ordinary constructionhaving the usual threaded portion 2 formed upon one end thereof.Diametrically opposite grooves 3 are formed within the threaded portion2 of the bolt the said grooves being connected by a transverse groove 3extending across the outer end of the bolt shank 1. Nuts 4 and 5respectively are adapted to be threaded or screwed upon the threadedportion 2 of the bolt and locked thereupon in a manner to be hereinafterfully described. Oppositely disposed grooves 6 and 7 are formed reSpecification of Letters Patent.

Application filed July 23, 1913. Serial No. 780,802.

Patented Apr-5,1915.-

spectively within the nuts 4 and 5,the said grooves, when the nut isthreaded over the shank 2 of the bolt, adapted to receive a key member 8which is in turn inserted or forced into the grooves 30f the bolt, theedges of the said key projecting'beyond the periphery or outer face ofthe bolt shank. The said key member 8 is split centrally from its innerend thereby forming arms 8 disposed to straddle the threaded portion 2of the bolt; the connecting portion of the key designated 9 fittingwithin the transverse groove 3 of the said bolt.

For the purpose of locking the'key 8 against accidental removal, acotter pin 9 is provided, one portion ofthe pin being in serted orforced into an opening 10 formed Within the extremity of the bolt shankso as to extend therethrough in a direction transverse to the groove 3above mentioned, that portion of the key member fitting within the saidgroove 3 having an opening 11 formed therein adapted to register withthe said opening 10 as illustrated to advantage in Fig. 5 of thedrawings. A larger opening 12 is formed within the key member 8 adjacentthe opening 11, through which the other portion of the cotter pin 9 isinserted, this arrangement of the pin with respect to the key and boltlocking the former against lateral as well as longitudinal movementindependent of the bolt itself.

The grooves 6 and 7 of the nuts are formed in uniform spaced relationand extend throughout the entire length of the central bore or openingof the said nuts, this arrangement of the grooves permitting the keymember 8 to be placed and removed after the-said nuts have been properlyad jousted upon the threaded portion 2 of the olt.

It will be seen from the above, taken in connection with theaccompanying drawings that the removal of the pin 9 andthe withdrawal ofthe key member 8 from thevslots 3 of the bolt shank, will permit thenuts 5 and 6 threaded thereon to be either entirely removed or freelyadjusted as occasion deembodiment of my invention and that various minorchanges in details of construction, proportion and arrangement of partsmay be made Within the scope of the appended claim and Withoutsacrificing any of the advantages of my invention.

Having thus fully described my invention, What I claim as new and desireto secure by Letters Patent, is

In a nut lock, a grooved bolt, a grooved nut, said grooves forming keyWays, a substantially fiat locking key comprising a head portion havingtwo openings formed therein, arms extending therefrom in parallel spacedrelation, said arms fitting said Ways,

said head portion fitting a transverse groove connecting said boltgrooves, and a locking pin of the cotter type, one of the extensions ofwhich is insertible Wi thin an opening of the bolt and one of theopenings of said head, the other of the said extensions being insertibleWithin the other of the said head openings exteriorly of the bolt, asand for the purpose set forth.

In testimony whereof I affix my signature in presence of tWo Witnesses.

ALBERT DILLON. Witnesses:

AGNES DoUcHERTY, M. 0. DOUGHERTY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Paten s Washington, D. C.

